24.4.3 Some statistics collected by dmalloc

A memory consumption problem occured in recent simulations
(cmcast-[150,200,250].tcl), so we decided to take a closer look at scaling
issue. See page http://www-mash.cs.berkeley.edu/ns/ns-scaling.html
which demostrates the efforts in finding the bottlneck.

The following table summarises the results of investigating the
bottleneck: